Microscope apparatus and observation position reproduction method

An observation position reproduction method, comprising:

• in a first period
• capturing an image of a circular sample, calculating coordinates of a first center position of the circular sample based on the obtained image,
• capturing an image of the circular image, and recognizing a first pattern image of a predetermined area from the obtained image based on the coordinates of the first center position of the circular sample;
• and
• in a second period later than the first period
• capturing an image of the circular sample, calculating coordinates of a second center position of the circular sample based on the obtained image,
• capturing an image of the circular sample, recognizing a second pattern image of a predetermined area from the obtained image based on the coordinates of the second center position of the circular sample,
• calculating a rotational shift angle between the first pattern image recognized in the first period and the second pattern image recognized in the second period,
• correcting a rotational shift of the circular sample based on the rotational shift angle, and reproducing a position of the circular sample in the first period.

A computer-readable recording medium on which an observation position reproduction program for causing a computer to execute a method, the method comprising:

• in a first period
• capturing an image of a circular sample, calculating coordinates of a first center position of the circular sample based on the obtained image,
• capturing an image of the circular image, and recognizing a first pattern image of a predetermined area from the obtained image based on the coordinates of the first center position of the circular sample;
• and
• in a second period later than the first period
• capturing an image of the circular sample, calculating coordinates of a second center position of the circular sample based on the obtained image,
• capturing an image of the circular sample, recognizing a second pattern image of a predetermined area from the obtained image based on the coordinates of the second center position of the circular sample,
• calculating a rotational shift angle between the first pattern image recognized in the first period and the second pattern image recognized in the second period,
• correcting a rotational shift of the circular sample based on the rotational shift angle, and reproducing a position of the circular sample in the first period.